 /* 个人中心页面 */
 * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.6;
        }

        .navbar {
            background: linear-gradient(135deg, #4a6cf7 0%, #8aa4ff 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .nav-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 1.5rem;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: bold;
        }

        .nav-links a {
            color: white;
            text-decoration: none;
            margin-left: 1.5rem;
            transition: opacity 0.3s;
        }

        .nav-links a:hover {
            opacity: 0.8;
        }

        .nav-links span {
            margin-left: 1.5rem;
            font-weight: 500;
        }

        .profile-container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1.5rem;
        }

        .profile-header {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
            display: flex;
            align-items: center;
            margin-bottom: 2rem;
        }

        .avatar {
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: linear-gradient(135deg, #4a6cf7 0%, #8aa4ff 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 2.5rem;
            font-weight: bold;
            margin-right: 2rem;
        }

        .user-info {
            flex: 1;
        }

        .user-info h1 {
            font-size: 1.8rem;
            margin-bottom: 0.5rem;
            color: #2c3e50;
        }

        .user-info p {
            margin-bottom: 0.5rem;
            color: #7f8c8d;
        }

        .edit-btn, .logout-btn, .save-btn {
            padding: 0.5rem 1rem;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 500;
            transition: all 0.3s;
            margin-right: 1rem;
            margin-top: 1rem;
        }

        .edit-btn {
            background-color: #4a6cf7;
            color: white;
        }

        .edit-btn:hover {
            background-color: #3a5ce5;
        }

        .logout-btn {
            background-color: #e74c3c;
            color: white;
        }

        .logout-btn:hover {
            background-color: #c0392b;
        }

        .save-btn {
            background-color: #2ecc71;
            color: white;
        }

        .save-btn:hover {
            background-color: #27ae60;
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .stat-card {
            background: white;
            border-radius: 10px;
            padding: 1.5rem;
            text-align: center;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
            border-top: 4px solid #4a6cf7;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(74, 108, 247, 0.15);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: bold;
            color: #4a6cf7;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            color: #7f8c8d;
            font-size: 0.9rem;
        }

        .profile-sections {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }

        @media (max-width: 768px) {
            .profile-sections {
                grid-template-columns: 1fr;
            }
            
            .profile-header {
                flex-direction: column;
                text-align: center;
            }
            
            .avatar {
                margin-right: 0;
                margin-bottom: 1.5rem;
            }
        }

        .section-card {
            background: white;
            border-radius: 12px;
            padding: 1.5rem;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
            border-top: 3px solid #4a6cf7;
        }

        .section-title {
            font-size: 1.3rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #f1f2f6;
        }

        .section-card p {
            margin-bottom: 1rem;
        }

        .input-field {
            width: 100%;
            padding: 0.75rem;
            margin-bottom: 1rem;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }

        .input-field:focus {
            border-color: #4a6cf7;
            outline: none;
            box-shadow: 0 0 0 2px rgba(74, 108, 247, 0.2);
        }

        .skill-tag {
            display: inline-block;
            background: linear-gradient(135deg, #4a6cf7 0%, #8aa4ff 100%);
            color: white;
            padding: 0.4rem 0.8rem;
            border-radius: 20px;
            margin: 0.3rem;
            font-size: 0.9rem;
        }

        .skill-input-container {
            display: flex;
            margin-bottom: 1rem;
        }

        .skill-input {
            flex: 1;
            padding: 0.75rem;
            border: 1px solid #ddd;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }

        .add-skill-btn {
            background-color: #4a6cf7;
            color: white;
            border: none;
            padding: 0 1rem;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            transition: background-color 0.3s;
        }

        .add-skill-btn:hover {
            background-color: #3a5ce5;
        }

        .skill-remove {
            cursor: pointer;
            margin-left: 5px;
            font-weight: bold;
        }

        .no-skills {
            color: #7f8c8d;
            font-style: italic;
            margin-bottom: 1rem;
        }